Authorities are urging Cairns residents to drink plenty of water to avoid dehydration as the city swelters through a heatwave.
Yesterday was Cairns' hottest day in more than 27 years.
Forecaster Andrew Mostyn says the city reached 38.6 degrees about 3:30pm (AEST).
"Very, very warm conditions there so that's roughly eight degrees above average," he said.
"Thirty-one degrees [is] the average in Cairns at this time of year but not quite near the record books - the record is 40.4 degrees.
"That was set in 1967, so not looking like we're going to break the record but remaining warm for the next couple of days."
Above-average temperatures are forecast to continue until the weekend.
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14:54 EST The irrigation restrictions in the state's north west will remain in place until results from the Broken Hill groundwater search are confirmed.